Indeed there was something missing! Now a beautiful inscription on the metal tells us what we are talking about. We are a bit ‘late, but here we come!

We do not call them “correctors”! They are simply the “lens groups” that are part of the optical design. So… “Triplet ED Lens Group”. They are for the TI 45 Astrograph in f/4 mode. Very soon we will show the f/8 mode “lens group”.